flux.1 dev Text Encode in very low cpu usage

[AhBumm]

Expected Behavior

Use all cores of cpu for text encode

Actual Behavior

It only use 1 of cpu core for text encode.

Steps to Reproduce

System: Ubuntu Server 24.04.1 LTS
Linux Kernel: 6.8.0-49-generic

run in common t2i workflow with flux dev fp8 model, could reproduce the problem

Debug Logs

no error and warn in log

Other

No response

[ltdrdata]

Did you run it in --cpu mode?

[AhBumm]

Did you run it in --cpu mode?

No.. the DiT part of model could run in cuda device correctly

[ltdrdata]

1. First, it is normal to maximize the use of the GPU rather than the CPU for text encoding.
2. Regarding CPU core imbalance, refer to the following issue.
   CPU cores are not fully utilized when using standalone build for Windows (torch) #5178